How much is the percentage of false negative RTPCR vis-a-vis HRCT Chest in suspected Covid19 cases?

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Accurate study will be published after this pandemic id over or end statistics will be there. Presently we are told that around 5% false negative results so many factors contribute like sampling , timing,place of collection , transportation etc but still RT PCP IS A GOLD TEST FOR COVID DETECTION. HRCT has 97 % sensitivity and around 25% specifically.

Thanks Dr Dinesh Gupta
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Less than 5% chances of getting false negative RT PCR in covid 19, that too depending upon day of infection on which swab sample is taken. HRCt thorax has 97% sensitivity with around 25to30% specificity.

ALTHOUGH SPECIFIC DATA. IS NOT AVAILABLE.... STILL... BOTH CT. SCAN AND RT PCR.....ARE ... PREFERRED

Both are different test with different sensitivity and senstivity. CT is more sensitive than RT PCR BUT RT PCR IS MORE SPECIFIC. In RT PCR negative patient , if CT and sign symptoms and other blood test are suggestive of COVID , then alway repeat covid RT PCR. In covid RT PCR patient , then CT is usefull to see the lung involvement, and acertain the lung volume involved, and to assess the severity , and to some extent the phase of illness. In RT PCR postive , CT is not useful for diagnosis.

Less than 5% chances getting false negative on RTPCR While HRCT chest 98% sensitivity

5% chance

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